<template>
  <div>
    <el-container>
      <!-- 轮播图 -->
      <el-main>
        <!-- interval自动切换的时间间隔，单位为毫秒 -->
        <!--动态将图片轮播图的容器高度设置成与图片一致-->
        <el-carousel :interval="2000" type="card" height="300px">
          <el-carousel-item v-for="item in imagebox" :key="item.id">
            <img
              :src="uploadUrl + '/' + item.slideshowUrl"
              class="image"
            />
          </el-carousel-item>
        </el-carousel>
      </el-main>
    </el-container>
  </div>
</template>

<script>
import { getSlidenshow } from "../api/public";
import config from "../config/config"
export default {
  name: "lbt",
  mounted() {
    getSlidenshow().then(({ data }) => {
      this.imagebox = data.data;
    });
  },
  data() {
    return {
      imagebox: [],
      // 浏览器宽度
      screenWidth: 0,
    };
  },
  methods: {
    setSize: function () {
      // 通过浏览器宽度(图片宽度)计算高度
      this.bannerHeight = (400 / 1920) * this.screenWidth;
    },
  },
  computed:{
    uploadUrl(){
      let baseURL = config.baseURL
      return baseURL
    }
  }
};
</script>

<style scoped>
/* 轮播图 */
.el-carousel__item h3 {
  color: #475669;
  font-size: 18px;
  opacity: 0.75;
  line-height: 300px;
  margin: 0;
}

.el-carousel__item h3 {
  color: #475669;
  font-size: 14px;
  opacity: 0.75;
  line-height: 200px;
  margin: 0;
}
/* 轮播图没有图片的时候默认的颜色 */
.el-carousel__item:nth-child(2n) {
  background-color: #99a9bf;
}
/* 轮播图没有图片的时候默认的颜色 */
.el-carousel__item:nth-child(2n + 1) {
  background-color: #d3dce6;
}
img {
  /*设置图片宽度和浏览器宽度一致*/
  width: 100%;
  height: inherit;
}
</style>